Attachment for lamp chimneys



yJuly 1 1924. 1,499,372

' R. KERNAUL ATTACHMENT FOR LAMP GHIMNEYS Filed June 20, 1923 Patented July l, 1924.

PATENT oFFlcE.

RUDOLPH KERNAUL, 0F PULLMAN, MICHIGAN.

ATTACHMENT FOB, LAMP CHIMNEYS.

Application led June 20, 19213. Serial No. 646,644.

To a-ZZ whom t may concern:

Be it known that I, RUDOLPH KERNAUL, a citizen of the'United States, and a resident of Pullman, county of Allegan and State of Michigan, have invented certain new and useful Improvements in an Attachment for Lamp Chimneys, of which the following is a specification.

My invention pertains to new and useful improvements in an attachment forlamp chimneys, and has for its object to provide means mountable in a lamp chimney for preventing the lamp from smoking; another object is to provide such an `attachment which is simple and economical in construction, and durable and efficient in use.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specification, and in which,

Fig. 1 is an elevational view showing my invention mounted in position in a lamp chimney, and

Fig. 2 is a cross section taken on line 2 2 of 'Fig l.

I have illustrated my invention in the form of a cylindrical sleeve 4, preferably constructed of sheet metal or isinglass or of any combination of these two materials, but which may also be made of any other suitable heat resisting material. The sleeve is split longitudinally and overlapped, providing an open seam 5, and is made resilient, so that it may be readily contracted or eX- panded in circumference, to fit in the tops of chimneys 6 of various diameter, of an ordinary lamp 7. The sleeve is provided with outwardly bulged ring portions or ridges 8 adjacent each of its open ends for reenforcing said sleeve and also aiding to support it in position at the top of the chimney.

After considerable experimenting and after extended use of an attachment like that disclosed, I have found that with this device inserted in the top of the lamp chimney the wick may be turned substantially twice as high as without the use of the device, showing that with the use of this device the lamp 'is provided with substantially twice the burning power before it will smoke, in other words that with the use of this sleeve the draft is considerably improved and steadied and the lamp may 'be made substantially twice as elfective and luminous as without the use of the sleeve, before the lamp will start smoking` iand blacken the chimney. It will also effectively prevent sudden draft from extinguishing the light or causing the light to flicker.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I,

therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention, what I' claim as new and desire to secure by Letters Patent is:

l. A cylindrical attachment arranged to fit in the top of a lamp chimney, and provided with a surrounding ridge adjacent each of its open ends for re-enforcing said attachment and supporting it with either end in said chimney.

2. A cylindrical lamp chimney attachment split and overlapped longitudinally and made expansible to fit chimneys of various size, and having similar open ends with reenforcing ridges to support either end in the chimney top.

3. A cylindrical lamp chimney attachment of resilient material made Vwith an overlapping open seam and fitting expansibly in the chimneys of various size, and having a circumferential ridge formed adjacent each open end for yre-enforcing said attachment and supporting it with either end engaged in said chimney.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

RUDOLPH KERNAUL.

Witnesses: f

C. A. Hu'rcninson, A. C; PUTNAM. 

